Touch does not work in iOS 4.3, 5.0!!

I found touch problem in iOS 4.3, 5.0.

onUIKeyboardNotification method of EAGLView.mm is registered as a callback method.

this method is called twice in iOS 4.3, 5.0.
but this is called four times in iOS 5.1, 6.0.

Why are you doing this?